Ventilating pipe



NOV. 1, A. w BRENNINGER VENTILATING P IPE Filed May 3, 1935 E137- F15E1.

INVENTOR.

. Patentecl Nov. 1, 1938 UNITED STATES "PATENT oFFicE Alfred Brenninger,

Pelham, N. Y., assignor of one-half to James F. McConnochie, New

York, N. Y.

Application May 3,

9 Claims.

This invention relates to an improved smoking pipe, and particularly toa pipe the shank of which may be ventilated so as to permit the air tocirculate through the bore of the same and rapid- {5 1y dry and purifythe wood from which the pipe is constructed.

One of the objects of the invention is to provide a smoking pipe with ashankand a member insertable therein, the shank being constructed with alongitudinal slot to permit of inspection and insure free ventilation,and the insertable member being constructed to seal the bore of a thestem against leakage to the ventilating slot and to provide acondensation slot in its base and an axial smoke passage communicatingwith the same, the ventilating slot terminating inwardly of themouthpiece receiving end of the shank, so that it will notexpand toimpair the sealing fit of the slotted stem with the insertable stemmember.

Anotherobject of the invention is the provision of a pipe having a shankconstructed as above set forth, with a mouthpiece which is provided witha sliding closure for the ventilating slot, the rear end of which isswivelled to the mouthpiece bit by means of the insertable stem member,the rear end of which is coupled in the mouthpiece bit, so that themouthpiece can be turned by the pipe user to withdraw the insertablemember, without injuring any of the parts of the pipe.

Another object of the invention is to provide a pipe with, a shank andmouthpiece part which is insertable in the stem to provide acondensation trap at the base of the bore of the shank, and to providemeans on the insertable part which will produce a scraping or wipingaction, to remove nicotine or other matter deposited in the condensation trap. V 40 A still further object of the invention is toprovide aninterfitting connection between the inner end of theinsertable member and the body of the pipe, to insure against smokeleakage and to provide a closed draft through the stem. 7

A still further object of the invention is to realize these features bya construction which will be simple in design, economical tomanufacturaand which will give superior service in use for aprolongedperiod of time.

With the above and other objects in view, the invention consists incertain new and useful constructions, combinations, and arrangements orparts, clearly described in the following specifi- *cation,and fullyillustrated in the drawing, in

which:--

1935, Serial No. 19,646

Fig. 1 is a side view of the improved pipe.

Fig. 2 is a longitudinal sectional view thereof, taken on line 22 ofFig. l, looking in the directionof the arrows.

Fig. 3 is a transverse sectional View, taken on line 3-3 of Fig. 2,looking in the direction of the arrows.

Fig. 4 is a top plan view of the improved pipe.

Fig. 5 is a plan view of the bit and insertable member, showing thesliding slot closure turned to right angles, of its normal position, forillustrative purposes only. i

Fig. 6 is a top plan view of the pipe bowl and shank, with themouthpiece and insertable member removed.

i Fig. 7 is a transverse sectional view, taken on line 'l- E of Fig. 6,looking in the direction of the arrows.

Fig. 8 is a similar view, taken on line 83'of Fig. 6, looking in thedirection of the arrows.

Fig. 9 is a fragmentary plan view of a modified form of a pipe having ashank provided with a metal collar.

Fig. 10 is a transversesectional view thereof.

Referring to the drawing illustrating the practical construction of theinvention, 5 desigates the bowl of the pipe and 5 an integral shank. Theshank is formed with a smoke passage 1 which communicates with thecombustion chamber 8 of the bowl.

1 The passage 1 is enlarged to receive a cylindrical insertable member9, which is formed with an axial smoke passage l0, which communicateswith the bowl passage l. The tubular wall of the shank is formed with alongitudinal slot l I, which is shown to be located on the upper sidethereof. This slot extends through the wall of the shank from a pointspaced rearwardly of the bowl 5 to a point spaced forwardly of the rearend of the shank, thus providing an unslotted shank por tion or bridge52, shown in Figs. 6 and 7, and an unslotted bridge portion l3 adjacentthe bowl 5.

The insertable member 9 is formed with an internally bevelled forwardend 9a, which thus provides a good sealing fit with the correspondingportion 9b, formed in the forward end of the shank, as shown in Fig. 2.The maximum surface area between the forward end of the insertable tubeor member and the pipe is thus provided. The lower side of theinsertable tube or member 9 is also formed with a longitudinal slot M,through which nicotine and other undesirable matter may condense againstthe bottom surface of the enlarged bore of the shank, in the area.

bounded by the sides of the longitudinal slot M. The forward side oredge of the slotted tube or member 9 is provided with a wiping orscraper edge l5, adapted to have a wiping or scraping action against thebottom surface of the enlarged bore la, of the shank, when the tube 9 iswithdrawn from the stem.

The insertable tube or member 9 is coupled by means of the screw threadsIS with the forward end of the mouthpiece bit I1, which is provided withan axial passage I8 leading to the mouth receiving end of the bit, todischarge smoke to the mouth of the user. This tube 9 is also formedwith a shoulder 9 and between this shoulder and the forward end of thebit I! a circular member is mounted, so that it can turn freely ineither direction, using the tube 9 as a pivot for such turning action.

The circular member 20, which is in the nature of a washer or bearingdisc, is equipped with an integral sliding closure bar or arm 2|, whichis adapted to slide over the slot H, and close the same. To insure asmooth external fit of this closure bar with the shank 6, the latter isformed with a longitudinal shoulder 22, which extends \parallel to theslot on each side thereof, and beyond the end of the slot, and thisshoulder is engaged by the inner surface of the sliding closure bar orfinger 2|.

The forward end of the mouthpiece bit is provided with an index mark 23,shown to be located on the upper and most easily observed side of thebit. The washer or bearing disc 28 is also provided with a correspondingindex mark 24, which is designed to register with the index mark 23.When the two marks are in registration the condensation slot in thelower side of the insertable tube 9 will be located in its normal bottomposition. By rotating the bit the tube 9 will be turned, thus freeingthe same for easy withdrawal. Whenthe bit is rotated or turned theclosure finger or bar will not be disturbed.

The heat conducted to the tube 9 is dissipated to some extent throughthe metal washer or disc '20 and through the air space 25 above the tubeand below the sliding closure finger 2|, to the latter, so that theconstruction tends to produce a cooling action on the smoke stream.

When all the parts are properly coupled in working relation, as shown inFigs. 1 and 2, the smoke will be drawn from the combustion chamber ofthe bowl 5, through the passage H] to the passage H! of the mouthpiecebit, and discharged into the mouth of the smoker.

The flow of smoke will cause nicotine and other matter to condense overthe slotted area of the tube 9, thus producing a purifying action. Bywithdrawing the mouthpiece bit both the tube 9 and the closure finger 2|will be detached, and at the same time any nicotine or deposited matterwill be scraped from the enlarged bore la of the shank. When themouthpiece bit, the tube 9 and the sliding finger 2| are thus removed,the longitudinal slot II will be wholly exposed, thus provi'ding alongitudinal ventilation opening for the shank. Due to the fact thatthis slot is located within the ends of the shank, leaving the shankends unslotted, the shank will not expand or change the sealing fitbetween the tube 9 and the wall of the shank, and the draft conditionsof the pipe will be maintained indefinitely.

The closure finger also serves as a means for decorating the pipe shank,and carrying identification data. When the closure finger has beenremoved the interior of the stem may be easily inspected.

After use pipe shanks accumulate moisture and particles of tobaccoadhere .to the moist walls of the shanks, thus producing a soggycondition, which tends to restrict the smoke passage, cor rupting theflavor of the smoke, making the smoking more difficult and inefficient,and diminishing the pleasure obtained from smoking.

At best, such pipe shanks can only be partially cleaned by the frequentuse of pipe cleaners. Furthermore, standard pipe shanks have only asmall passage, which presents a small opening to the atmosphere, so thatit requires a long period of time to permit the air to dry out themoisture charged shank. But even this drying out process does not resultin a complete ventilation and purifying of the pipe shanks.

With my improved smoking pipe, the air can freely circulate throughoutthe length of the pipe shank, due to the fact that the bore of the shankis relatively large, when the insertable tube 9 is removed, and thisenlarged bore is in direct communication with the atmosphere for itsentire length, not only through the open rear end of the shank, butthrough the large lateral opening or longitudinal slot ll of the shank.

This construction permits of the exposure of the interior of the shankto the direct rays of the sun, and a complete ventilating and purifyingaction can be thus obtained in a short period of time, with the resultthat the ventilated and purified pipe shank will deliver a sweeter andpurer smoke stream to the smoker.

This construction also permits of complete inspection of the entire pipeshank, and enables the smoker to use any pipe cleaner with betterresults.

It is also possible to wash the pipe shank, if so de-v sired.

In Figs. 9 and 10 I show a pipe shank having a longitudinal slot 26, anda reduced outer end portion 21, on which is mounted the metal sleeve 28.This sleeve is formed with a longitudinal groove 29, which is alignedwith the slot 26. This sleeve reinforces the shank against spreading orsplit:

ting, and prevents the expansion of the shank when the insertable memberof the stem or mouthpiece is pushed into position or withdrawn.

Having described my invention I claim:-

1. A smoking pipe having a shank provided with a longitudinal slotopening to the atmosphere and a smoke passage communicating therewith,the slot terminating inwardly of the ends of the shank and thusproviding a ventilation opening located inwardly of both ends of theshank, a bit, and;

means connected to said bit for closing both sides of the slot.

2. A smoking pipe having a shank and bowl, said shank having a lateraland completely enclosed opening in one side thereof, a mouthpiece bitinsertable in the shank and provided with a sealing fit with the shank,and means carried by the mouthpiece bit having a sliding fit with theexternal surface of the shank to close said lateral opening.

3. A smoking pipe comprising a bowl having a combustion chamber, a shankconnected to said bowl provided with an axial bore communicating withthe combustion chamber and a slot in the upper wall opening the bore tothe atmosphere,

a tubular member adapted for insertion in the axial bore of the shankprovided with an end seat on the shank and a lower slot opening to thebore wall, a bit coupled to the tubular member, said shank slotterminating short of the shank end.

and means carried by the bit for externally closing the shank slot.

4. A smoking pipe having a bowl and a shank connected thereto, the shankhaving a longitud i nal passage communicating with the bowl and havingan opening in the upper part of its wall terminating inwardly of theouter end of the shank, a tubular member insertedin the passage of theshank and having sealing engagement at its inner end with the wall ofthe said passage and normally closing communication between the saidpassage and the opening of the shank, a bit coupled to said tubularmember, and a finger rotatably mounted on the bit and slidable on theshank to externally close the opening thereof.

5. A smoking pipe section comprising a bowl and a shank connectedthereto, said shank having a smoke-duct extending axially thereof, anaperture terminating short of the rear end of the shank exposingsubstantially all of said duct to the atmosphere, a sealing member, andmeans on the rear end of the shank for bridging the sealing member oversaid aperture to externally seal same.

6. In combination, a pipe having a bowl and a shank; the shank having abore from the bowl to the rear end of the shank, said shank having anupper longitudinal slot terminating short of the rear end of the bore,and communicating with said bore and with the atmosphere and provided atthe exterior face of the shank with a marginal said bore and sealing theslot from end to end; a mouth piece bit secured fast to the member andadapted to withdraw the member; and a sleeve around the rear end of theshank for preventing the enlargement of the bore at said end, thereby tomaintain a snug fit on the tubular member.

8. In combination, a pipe having a bowl and a shank; a sleeve around therear end of the shank; the shank having a bore from the bowl to the rearend of the shank, said shank having an upper longitudinal slotterminating short of both ends of the bore, and communicating with saidbore and the atmosphere and provided around its outer side and endportions with a marginal rabbet shoulder said sleeve being formed with arecess alined with the shoulder and extending to the rear end of theshank; a tubular member snugly fitting in said bore; a closure stripslidably fitted on said rabbet shoulder; and a mouth piece bit securedonto the end of said tubular member.

9. In combination, a pipe having a bowl and a shank; the shank having abore from the bowl to the rear end of the shank said shank having anupper longitudinal slot communicating with said bore and provided aroundits outer side and end portions with a marginal rabbet groove extendingthrough the rear end of the shank; a tubular member snugly fitting insaid bore, and having a rearwardly projecting reduced threaded end and arearwardly faced shoulder at the inner end of the reduced portion; acollar rotatably and slidably fitted on said threaded portion againstthe end of said shank and said shoulder and provided with an integralclosure strip slidably fitting on said groove; and a mouth piece bitengaging said collar provided with an axial passage having a threadedenlargement tightly screwed on said threaded portion.

ALFRED W. BRENNINGER.

